Middle connecting shaft driving piece of juicer

Abstract

The utility model relates to a mechanical part and a vegetable and fruit juicer, in particular to a middle connecting shaft driving piece of a juicer. The middle connecting shaft driving structure is internally hidden and connected with the juicing screw, the transmission shaft can be well protected through the built-in structure, and the capacity of sealing and isolating liquid is more outstanding. Comprising a screw connecting piece, a transmission shaft and a speed regulating gear set, the screw connecting piece comprises a driving cavity pipe and a driving pipe, the driving pipe is arranged on the top of the driving cavity pipe in a protruding mode, the transmission shaft comprises a reset shaft and a differential shaft, the upper end of the reset shaft is connected with the differential shaft, the reset shaft and the differential shaft are inserted into the driving cavity pipe, and the differential shaft is further inserted into the driving pipe; the bottom of the reset shaft is connected with a speed regulation gear set. Compared with the prior art, different layers of driving and transmission structures can be conveniently arranged, the transmission shaft is completely arranged in the driving cavity pipe of the juicing screw connecting piece, the transmission shaft can be well protected, and the liquid sealing and isolating capacity is more outstanding.

Description

Technical Field

[0001] The utility model relates to mechanical parts and a fruit and vegetable juice extractor, in particular to an intermediate connecting shaft driving part of the juice extractor. Background Art

[0002] A juicer is a machine that can quickly squeeze fruits and vegetables into fruit and vegetable juice. It generally includes a main unit and a juice barrel. The main unit includes a motor and a control mechanism. A juicing screw is set in the juice barrel. Fruits and vegetables are placed in the juice barrel, and the motor drives the juicing screw to rotate and squeeze juice. Under the existing technology, this direct drive structure has great disadvantages. First, the speed cannot be adjusted and the juice can only be squeezed according to the fixed speed of the motor. This will not be suitable for many hard fruits and vegetables. If the speed cannot be controlled, the residue discharge cannot be controlled. If the speed is slow, the residue of the juice product will accumulate in the juice barrel for a long time, affecting the taste of the juice. Second, once the juice is blocked and the squeezing is hindered, the motor or the central drive shaft will be damaged immediately. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model provides an intermediate coupling drive component for a juicer, which adopts an internal intermediate coupling drive structure and is connected to the juicing screw. This internal structure can better protect the transmission shaft and has a more outstanding ability to seal and isolate liquids.

[0004] The utility model is realized through the following contents: an intermediate connecting shaft driving part of a juicer, comprising a screw connecting part, a transmission shaft, and a speed regulating gear set, wherein: the screw connecting part comprises a driving cavity and a driving tube, the driving tube is protruding from the top of the driving cavity, the transmission shaft comprises a reset shaft and a differential shaft, the upper end of the reset shaft is connected to the differential shaft, the reset shaft and the differential shaft are inserted into the driving cavity, and the differential shaft is also inserted into the driving tube; the bottom of the reset shaft is connected to the speed regulating gear set.

[0005] With this structure, compared with the prior art, the screw connector is no longer a solid direct connector, but a solid outer and hollow inner structure, which is convenient for arranging drive and transmission structures at different levels. The drive shaft becomes completely built into the drive cavity of the juicing screw connector. It is no longer a separate external part and then connected to the juicing screw as in the prior art. This built-in structure can better protect the drive shaft and has a more outstanding ability to seal and isolate liquids. The drive shaft includes a reset shaft and a differential shaft. The reset shaft is used to control the tightness of the connection between the juicing screw and the drive shaft. The differential shaft is used to connect to the speed regulating gear set, which can smoothly and easily control the rotation of the entire transmission mechanism and even the juicing speed.

[0006] Preferably, the speed regulating gear set includes a gear platform, a sun gear, and planetary gears. The sun gear is arranged at the center of the gear platform, and the planetary gears are arranged to mesh with the sun gear.

[0007] The present structure has good stability, strong static transmission ratio, relatively small fluctuation range of rotation speed, and can provide a more stable output of controllable speed.

[0008] Preferably, the speed regulating gear sets are stacked and connected in groups of 1 to 3, so that more levels of controllable speed can be selected.

[0009] Preferably, the reset shaft includes a reset shaft body, a reset transmission tube, a reset spring, and a lower one-way bearing. The reset shaft body includes a reset limit head and a reset rod. A reset limit head is provided on the top of the reset rod. The diameter of the reset limit head is larger than the reset rod, and a reset connecting groove is provided under the reset limit head. The lower one-way bearing is provided on the reset rod, and a reset spring is provided on the reset rod between the lower one-way bearing and the reset limit head.

[0010] The adoption of this structure makes a breakthrough in the existing technology and improves the transmission shaft structure, so that the problem of the differential shaft threaded connection entering the juice extraction screw being excessively screwed in and finally broken is avoided.

[0011] Preferably, a reset limit ring is provided on the top of the reset transmission tube, a lower pawl is provided upwards on the reset limit ring, a differential limit ring is provided on the bottom of the differential shaft, an upper pawl is provided downwards on the differential limit ring, and the lower pawl and the upper pawl are interlocked after being assembled.

[0012] Preferably, the differential shaft includes a differential shaft body, a differential limiting ring, a center through rod, and a differential shaft top screw. The differential shaft top screw is arranged on the top of the differential shaft body, the differential limiting ring is arranged on the bottom of the differential shaft body, and the center through rod is arranged at the center of the lower end of the differential limiting ring. An upper pawl interlocked with the lower pawl is arranged on the differential limiting ring around the center through rod. An upper one-way bearing is fitted on the center through rod and then inserted into the reset connecting groove on the top of the reset limit head.

[0013] By adopting this structure, the related structures of the reset limit head and the differential shaft match the power transmission. If the upper pawl has disengaged from the lower pawl on the reset shaft, the differential shaft will not continue to rotate. This interlocking structure further improves the reset shaft, avoiding the problem of excessive screwing of the differential shaft thread into the juicer screw due to power transmission, and the problem of the differential shaft and the reset shaft being misaligned when the thread is excessively screwed in for reset. The interlocking structure has its own misalignment correction function.

[0014] Preferably, the drive tube is sleeve-connected with an outer rotating tube, an inner screw core is provided at the bottom and top of the outer rotating tube, a thread is provided in the inner wall of the inner screw core, the differential shaft top screw at the top of the differential shaft is spirally connected to the inner screw core during the rotational drive process, and spirally withdraws from the inner screw core during the reverse movement of the motor; the outer rotating tube is inserted into the central driving tube of the juice extraction screw.

[0015] With the structure, the driving structure and the juicing screw are easily combined and assembled, and the driving structure is adapted to exit the inner screw core of the juicing screw by reverse rotation of the motor.

[0016] As preferred, the center of the gear table is provided with a flat shaft, the center of the flat shaft is provided with a flat shaft hole, the lower end of the reset shaft body is provided with a flat position rod, the flat position rod is inserted into the flat shaft hole, the rotating power received by the gear table is transmitted to the flat position rod through the flat shaft, and is transmitted to the entire reset shaft, the reset shaft transmits the received rotating power to the differential shaft, the differential shaft top screw rod at the top of the differential shaft is screw-connected with the inner screw core in the rotating driving process and is screw-exited from the inner screw core in the motor reverse process; and the outer rotating tube is inserted into the center driving tube of the juicing screw.

[0017] With the structure, the rotating power transmission capacity is stable, the planetary gear has better transmission stability, and the differential shaft has less transmission deviation in the motor reverse action.

[0018] Compared with the prior art, the utility model has the advantages that 1, compared with the prior art, the screw connecting piece is no longer a solid direct connecting piece, but becomes an outer solid and inner hollow structure, different levels of driving and transmission structures are arranged, the transmission shaft is completely arranged in the driving cavity tube of the juicing screw connecting piece, and the transmission shaft is no longer separately arranged outside and then connected with the juicing screw as in the prior art, the transmission shaft is well protected, and the sealing and liquid isolation capacity is also more outstanding.

[0019] 2, the transmission shaft includes a reset shaft and a differential shaft, the reset shaft is used for controlling the loose connection between the juicing screw and the transmission shaft, and the differential shaft is used for being connected with a speed regulating gear set, so that the rotation of the entire transmission mechanism or the juicing speed can be smoothly and easily controlled.

[0020] 3, the transmission shaft structure is improved to be composed of the reset shaft and the differential shaft, so that the problems of over-rotation of the differential shaft screw connection into the juicing screw and finally breakage and the interlocking structure preventing up-down deviation are avoided.

[0021] 4, the connection with the juicing screw and the connection with the planetary gear are provided with protection structures, so that the juicing screw and the planetary gear have better rotating speed and power transmission stability, and the differential shaft has less transmission deviation in the motor reverse action. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole front perspective structure diagram.

[0023] Figure 2 It is a whole perspective view.

[0024] Figure 3 It is a whole explosion perspective view.

[0025] Figure 4 Figure 6 is a structure diagram of the reset shaft;

[0026] Figure 5 Figure 7 is a structure diagram of the differential shaft;

[0027] Figure 6 Figure 8 is a combination diagram of the differential shaft and the upper and lower differential shaft;

[0028] Figure 7 Figure 9 is a connection diagram of the power structure, the transmission structure and the juicing screw;

[0029] Figure 8 Figure 10 is a connection diagram of the transmission structure and the juicing screw;

[0030] In the figure, the marks are: screw connecting piece 1, transmission shaft 2, speed regulating gear set 3, driving cavity pipe 4, driving pipe 5, reset shaft 6, differential shaft 7, gear table 8, sun gear 9, planetary gear 10, reset shaft body 11, reset transmission pipe 12, reset spring 13, lower one-way bearing 14, reset limiting head 111, reset rod 112, reset connecting groove 113, reset limiting ring 15, lower pawl 16, differential limiting ring 17, upper pawl 18, differential shaft body 19, differential limiting ring 17, center through rod 21, differential shaft top screw 22, upper one-way bearing 23, outer rotating pipe 24, inner screw core 25, flat shaft 26, flat shaft hole 27, flat position rod 28, juicing screw 29, center driving pipe 30. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be understood as limiting the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] Embodiment 1, as Figures 1-3As shown, an intermediate coupling drive member of a juicer includes a screw connector 1 connected to a juice extraction screw 29, a transmission shaft 2 for transmitting motor power, and a speed regulating gear set 3 for adjusting the speed of the transmission shaft 2, wherein: Figure 1 、 2 As shown, the screw connector 1 is different from the prior art in that it is configured as two main structures, a driving cavity 4 and a driving tube 5. The driving tube 5 is protruding from the top of the driving cavity 4, and the protruding structure is used to insert and connect the juice extraction screw 29;

[0034] The focus of the present invention is that Figures 3-6 As shown, the transmission shaft 2 includes a reset shaft 6 and a differential shaft 7. The upper end of the reset shaft 6 is connected to the differential shaft 7. The reset shaft 6 and the differential shaft 7 are inserted into the drive cavity tube 4, and the differential shaft 7 is also inserted into the drive tube 5. Finally, as shown in FIG. Figure 1 As shown, part or all of the differential shaft top screw 22 on the top of the differential shaft 7 protrudes from the drive tube 5 and is used to connect to the juice extraction screw; the bottom of the reset shaft 6 is connected to the speed regulating gear set 3.

[0035] like Figure 3 、 4 As shown, the reset shaft 6 includes a reset shaft body 11, a reset transmission tube 12, a reset spring 13, and a lower one-way bearing 14. The reset shaft body 11 includes a reset stopper 111 and a reset rod 112. The reset stopper 111 is provided on the top of the reset rod 112. The diameter of the reset stopper 111 is larger than that of the reset rod 112, and the reset stopper 111 is recessed with a reset connection groove 113. The lower one-way bearing 14 is provided on the reset rod 112, and the reset spring 13 is provided on the reset rod 112 between the lower one-way bearing 14 and the reset stopper 111. Example 1 adopts this structure, making a breakthrough in the existing technology and improving the transmission shaft structure. It avoids the problem of the differential shaft threaded connection entering the juice extraction screw and then being over-screwed and eventually breaking.

[0036] like Figure 4 As shown, a reset limit ring 15 is provided on the top of the reset transmission tube 12, a lower pawl 16 is provided upward on the reset limit ring 15, a differential limit ring 17 is provided on the bottom of the differential shaft 7, an upper pawl 18 is provided downward on the differential limit ring 17, and the lower pawl 16 and the upper pawl 18 are interlocked with each other after being assembled.

[0037] like Figure 5As shown, the differential shaft 7 includes a differential shaft body 19, a differential limiting ring 17, a center through rod 21, and a differential shaft top screw 22. The differential shaft top screw 22 is arranged at the top of the differential shaft body 19, the differential limiting ring 17 is arranged at the bottom of the differential shaft body 19, and the center through rod 21 is arranged at the center of the lower end of the differential limiting ring 17. An upper pawl 18 interlocked with the lower pawl 16 is arranged on the differential limiting ring 17 around the center through rod 21. An upper one-way bearing 23 is fitted on the center through rod 21 and then inserted into the reset connecting groove 113 at the top of the reset limit head 111.

[0038] Example 1 adopts this structure, the related structure of the reset limit head and the differential shaft, in matching power transmission, if the upper pawl 18 has disengaged from the mutual locking relationship of the lower pawl 16 on the reset shaft 6, the differential shaft and the reset shaft will separate up and down, so the differential shaft will not continue to rotate. If it is in the state of forward power transmission, this interlocking structure in the interlocking state of the differential shaft and the reset shaft further improves the reset shaft, avoiding the problem of excessive screwing of the differential shaft thread into the juicer screw due to power transmission and the problem of the differential shaft and the reset shaft being misaligned when the thread is over-screwed for reset, and the interlocking structure has its own misalignment correction function.

[0039] like Figure 3 As shown at the bottom, the drive tube 5 is sleeved and connected with the outer rotating tube 24. The bottom and top of the outer rotating tube 24 are provided with inner screw cores 25. The inner wall of the inner screw core 25 is provided with threads. The differential shaft top screw 22 at the top of the differential shaft 7 is spirally connected to the inner screw core 25 during the rotational drive process, and is spirally withdrawn from the inner screw core 25 during the reverse rotation of the motor. The outer rotating tube 24 is inserted into the central drive tube 30 of the juicing screw 29. The embodiment 1 adopts this structure, which not only makes it easy to install and combine the drive structure and the juicing screw, but also is very suitable for the drive structure to spirally withdraw the inner screw core of the juicing screw from the inner screw core of the juicing screw by utilizing the reverse rotation withdrawal action of the motor. The inner screw core 25 is provided at the bottom and top of the outer rotating tube 24. The inner screw core 25 at the top can be provided with a screw bolt for adjusting the tightness. When the bottom of the juicing screw is completely stuck, the screw bolt can be removed from the top to loosen the connection between the outer rotating tube 24 and the juicing screw, thereby achieving the purpose of protecting the juicing screw or the drive shaft.

[0040] A flat shaft 26 is disposed at the center of the gear stage 8, with a flat shaft hole 27 at its center. A flat rod 28 is disposed at the lower end of the reset shaft body 11 and inserted into the flat shaft hole 27. The rotational force applied to the gear stage 8 is transmitted to the flat rod 28 via the flat shaft 26 and subsequently to the entire reset shaft 6. The reset shaft 6 then transmits the rotational force to the differential shaft 7. The differential shaft top screw 22 at the top of the differential shaft 7 is screwed together with the inner screw core 25 during the rotational drive process and is screwed out of the inner screw core 25 during the motor's reverse operation. The outer rotating tube 24 is inserted into the central drive tube 30 of the juice extraction screw 29. Embodiment 1 employs this structure, resulting in stable rotational force transmission, enhanced transmission stability for the planetary gears, and reduced transmission deviation of the differential shaft during the motor's reverse operation.

[0041] Compared with the prior art, the screw connector in Example 1 is no longer a solid direct connector, but a structure that is solid outside and hollow inside, which is convenient for arranging drive and transmission structures at different levels. The transmission shaft is completely built into the drive cavity of the juicing screw connector. It is no longer a separate external part and then connected to the juicing screw as in the prior art. This built-in structure can better protect the transmission shaft and has a more outstanding ability to seal and isolate liquids. The transmission shaft 2 includes a reset shaft 6 and a differential shaft 7. The reset shaft is used to control the tightness of the connection between the juicing screw and the transmission shaft. The differential shaft is used to connect to the speed regulating gear set, which can smoothly and easily control the rotation of the entire transmission mechanism and even the juicing speed.

[0042] In Examples 1 and 2, Figure 1 、 3 As shown, the speed regulating gear set 3 includes a gear platform 8, a sun gear 9, and a planetary gear 10. The sun gear 9 is set at the center of the gear platform 8, and three planetary gears 10 are set to mesh around the sun gear 9. According to the existing technical operating principle of the planetary gear, as shown in FIG. Figure 8 The motor of the juicer shown rotates to transmit power to the sun gear 9, and the sun gear 9 rotates to transmit power to the planetary gear 10. The planetary gear 10 is linked to the upper planetary gear 10 with a transmission shaft, and the planetary gear 10 drives the sun gear 9, and so on. The speed regulating gear set 3 is stacked up and down and connected to set 3 groups, which are always transmitted to the transmission shaft 2, and then drive the juice extraction screw. The use of a three-layer speed regulating gear set has more selectable frequency levels of controllable speed, and the sizes of the sun gear 9 and the planetary gear 10 can be arbitrarily combined. The overall stability is good, the transmission ratio is strong in staticness, the fluctuation range of the speed is relatively small, and a more stable output of controllable speed can be provided.

[0043] Example 2, as Figure 8As shown, the outer rotating tube 24 is only provided with an inner screw core 25 at the bottom, and a thread is provided in the inner wall of the inner screw core 25. The differential shaft top screw 22 at the top of the differential shaft 7 is spirally connected with the inner screw core 25 during the rotation drive process. The outer rotating tube 24 can be provided integrally with the juicing screw. With such a structure, the motor only needs to be reversed to disassemble the juicing screw, which is convenient for cleaning the juicer.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intermediate coupling drive member for a juicer, comprising a screw connector, a transmission shaft, and a speed regulating gear set, characterized in that: The screw connector includes a driving cavity and a driving tube, the driving tube is protruding from the top of the driving cavity, the transmission shaft includes a reset shaft and a differential shaft, the upper end of the reset shaft is connected to the differential shaft, the reset shaft and the differential shaft are inserted into the driving cavity, and the differential shaft is also inserted into the driving tube; the bottom of the reset shaft is connected to a speed regulating gear set.

2. The intermediate coupling drive member of a juicer according to claim 1, characterized in that: The speed regulating gear set includes a gear platform, a sun gear, and planetary gears. The sun gear is arranged at the center of the gear platform, and the planetary gears are arranged to mesh with the sun gear.

3. The intermediate coupling drive member of a juicer according to claim 1 or 2, characterized in that: The speed regulating gear sets are stacked and connected up and down to form 1 to 3 sets.

4. The intermediate coupling drive member of a juicer according to claim 1, characterized in that: The reset shaft includes a reset shaft body, a reset transmission tube, a reset spring, and a lower one-way bearing. The reset shaft body includes a reset limit head and a reset rod. A reset limit head is provided on the top of the reset rod. The diameter of the reset limit head is larger than the reset rod, and a reset connecting groove is provided under the reset limit head. The lower one-way bearing is provided on the reset rod, and a reset spring is provided on the reset rod between the lower one-way bearing and the reset limit head.

5. The intermediate coupling drive member of a juicer according to claim 4, characterized in that: A reset limit ring is provided on the top of the reset transmission tube, a lower pawl is provided on the reset limit ring facing upwards, a differential limit ring is provided on the bottom of the differential shaft, an upper pawl is provided on the differential limit ring facing downwards, and the lower pawl and the upper pawl are interlocked after being assembled.

6. The intermediate coupling drive member of a juicer according to claim 1, characterized in that: The differential shaft includes a differential shaft body, a differential limiting ring, a center through rod, and a differential shaft top screw. The differential shaft top screw is arranged on the top of the differential shaft body, the differential limiting ring is arranged at the bottom of the differential shaft body, the center through rod is arranged at the center of the lower end of the differential limiting ring, and an upper pawl interlocked with the lower pawl is arranged on the differential limiting ring around the center through rod. An upper one-way bearing is fitted on the center through rod and then inserted into the reset connecting groove on the top of the reset limit head.

7. The intermediate coupling drive member of a juicer according to claim 1, characterized in that: The driving tube is sleeved and connected with an outer rotating tube, and inner screw cores are provided at the bottom and top of the outer rotating tube, and threads are provided in the inner wall of the inner screw core. The differential shaft top screw at the top of the differential shaft is spirally connected with the inner screw core during the rotational driving process, and spirally withdraws from the inner screw core during the reverse movement of the motor; the outer rotating tube is inserted into the central driving tube of the juice extraction screw.

8. The intermediate coupling drive member of a juicer according to claim 2, characterized in that: A flat shaft is provided at the center of the gear stage, a flat shaft hole is provided at the center of the flat shaft, a flat rod is provided at the lower end of the reset shaft body, and the flat rod is inserted into the flat shaft hole. The rotational power received by the gear stage is transmitted to the flat rod through the flat shaft and then to the entire reset shaft. The reset shaft transmits the rotational power received to the differential shaft. The differential shaft top screw at the top of the differential shaft is spirally connected to the inner screw core during the rotational drive process and spirally withdraws from the inner screw core during the reverse movement of the motor. The outer rotating tube is inserted into the central driving tube of the juicing screw.

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